Multizone, multipass photorefractive keratectomy

Details Multizone, multipass photorefractive keratectomy Multizone, multipass photorefractive keratectomy

1996-06-17

1999-05-18

Cohen, Lee

Surgery

Instruments

Light application

606 4, A61B17/36

Patent

active

059046783

ABSTRACT:
A multizone, multipass photorefractive keratectomy (MP-PRK) technique to treat 315 eyes with the 193-nm VISX 20/20 excimer laser. The procedure includes making multipass ablations that increase in ablative depth to create as step-wise ablation of the corneal to the predetermined dioptric correction. It also includes making multizone ablations that create of variable widths that result in a predetermined ablative depth with smooth transition edges. A combination of multizone, multipass ablations are used to treat astigmatism. New algorithms effectively treat the full range of myopia, including low myopic eyes (-1 to -6 D), moderately myopic eyes (-6 to -10 D); and highly myopic eyes (-10 to -27 D).

REFERENCES:
patent: 3697889 (1972-10-01), Dewey, Jr.
patent: 3743965 (1973-07-01), Offner
patent: 3848104 (1974-11-01), Locke
patent: 3938058 (1976-02-01), Yamamoto
patent: 3982541 (1976-09-01), L'Esperance, Jr.
patent: 3983507 (1976-09-01), Tang et al.
patent: 4180751 (1979-12-01), Ammann
patent: 4349907 (1982-09-01), Campillo et al.
patent: 4386428 (1983-05-01), Baer
patent: 4477159 (1984-10-01), Mizuno et al.
patent: 4520816 (1985-06-01), Schachar et al.
patent: 4538608 (1985-09-01), L'Esperance, Jr.
patent: 4573467 (1986-03-01), Rich et al.
patent: 4580559 (1986-04-01), L'Esperance, Jr.
patent: 4633866 (1987-01-01), Peyman et al.
patent: 4665913 (1987-05-01), L'Esperance, Jr.
patent: 4669466 (1987-06-01), L 'Esperance, Jr.
patent: 4718418 (1988-01-01), L 'Esperance, Jr.
patent: 4721379 (1988-01-01), L 'Esperance, Jr.
patent: 4729372 (1988-03-01), L 'Esperance, Jr.
patent: 4729373 (1988-03-01), Peyman
patent: 4732148 (1988-03-01), L'Esperance, Jr.
patent: 4764930 (1988-08-01), Bille et al.
patent: 4773414 (1988-09-01), L'Esperance, Jr.
patent: 4784135 (1988-11-01), Blum et al.
patent: 4798204 (1989-01-01), L'Esperance, Jr.
patent: 4838266 (1989-06-01), Koziol et al.
patent: 4840175 (1989-06-01), Peyman
patent: 4848340 (1989-07-01), Bille et al.
patent: 4856513 (1989-08-01), Muller
patent: 4862886 (1989-09-01), Clarke et al.
patent: 4903695 (1990-02-01), Warner et al.
patent: 4911711 (1990-03-01), Telfair et al.
patent: 4925523 (1990-05-01), Braren et al.
patent: 4941093 (1990-07-01), Marshall et al.
patent: 4975918 (1990-12-01), Morton
patent: 4994058 (1991-02-01), Raven et al.
patent: 5019074 (1991-05-01), Muller
patent: 5052004 (1991-09-01), Gratze et al.
patent: 5061342 (1991-10-01), Jones
patent: 5065046 (1991-11-01), Guyer
patent: 5074859 (1991-12-01), Koziol
patent: 5108388 (1992-04-01), Trokel
patent: 5108412 (1992-04-01), Krumeich et al.
patent: 5144630 (1992-09-01), Lin
patent: 5163934 (1992-11-01), Munnerlyn
patent: 5163936 (1992-11-01), Black et al.
patent: 5182759 (1993-01-01), Anthon et al.
patent: 5188631 (1993-02-01), L 'Esperance, Jr.
patent: 5196006 (1993-03-01), Klopotek et al.
patent: 5207668 (1993-05-01), L 'Esperance, Jr.
patent: 5217452 (1993-06-01), O'Donnell
patent: 5219343 (1993-06-01), L 'Esperance, Jr.
patent: 5219344 (1993-06-01), Yoder, Jr.
patent: 5226903 (1993-07-01), Mizuno
patent: 5257988 (1993-11-01), L 'Esperance, Jr.
patent: 5263950 (1993-11-01), L 'Esperance, Jr.
patent: 5284477 (1994-02-01), Hanna et al.
patent: 5312320 (1994-05-01), L 'Esperance, Jr.
patent: 5324281 (1994-06-01), Muller
patent: 5334190 (1994-08-01), Seiler
patent: 5353262 (1994-10-01), Yakymyshyn et al.
patent: 5360424 (1994-11-01), Klopotek
patent: 5363388 (1994-11-01), Shi et al.
patent: 5364388 (1994-11-01), Koziol
patent: 5370641 (1994-12-01), O'Donnell, Jr.
patent: 5395356 (1995-03-01), King et al.
patent: 5395362 (1995-03-01), Sacharoff et al.
patent: 5405355 (1995-04-01), Peyman et al.
patent: 5411501 (1995-05-01), Klopotek
patent: 5423801 (1995-06-01), Marshall et al.
patent: 5425727 (1995-06-01), Koziol
patent: 5425729 (1995-06-01), Ishida et al.
patent: 5437658 (1995-08-01), Muller et al.
patent: 5442487 (1995-08-01), Mizuno
patent: 5445633 (1995-08-01), Nakamura et al.
patent: 5461212 (1995-10-01), Seiler et al.
patent: 5470329 (1995-11-01), Sumiya
patent: 5480396 (1996-01-01), Simon et al.
patent: 5505723 (1996-04-01), Muller
patent: 5507741 (1996-04-01), L 'Esperance, Jr.
patent: 5507799 (1996-04-01), Sumiya
patent: 5549597 (1996-08-01), Shimmick et al.
patent: 5549599 (1996-08-01), Sumiya
patent: 5556395 (1996-09-01), Shimmick et al.
patent: 5586980 (1996-12-01), Kremer et al.
patent: 5599340 (1997-02-01), Simon et al.
patent: 5613965 (1997-03-01), Muller
patent: 5624436 (1997-04-01), Nakamura et al.
patent: 5637109 (1997-06-01), Sumiya
patent: 5646791 (1997-07-01), Glockler
patent: 5651784 (1997-07-01), Klopotek
patent: 5683379 (1997-11-01), Hohla
patent: 5711762 (1998-01-01), Trokel
patent: 5713892 (1998-02-01), Shimmick
patent: 5735843 (1998-04-01), Trokel
Qiushi Ren, Raymond P. Galitis, Keith P. Thompson, & J.T. Lin, "Ablation of the Cornea and Synthetic Polymers Using a UV (213 nm) Solid State Laser", IEEE Journal of Quatum Electronics, Dec. 1990, pp. 2284-2288.
Conference on Lasers and Electro-Optics, Optical Society of America, May 1990, pp. 28-30.
G.P.A. Malcom, M.A. Persaud, & A.I. Ferguson, "Resonant Frequency Quadrupling of a Mode--Locked Diode--Pumped Nd: YLF Laser", Optics Letters, Jul. 1991, pp. 983-985.
J.T. Lin, J.L. Montgomery, "Temperature--Tuned Noncritically Phase--Matched Frequency Conversion in LiB.sub.3 O.sub.5 Crystal", Optics Communications, Dec. 1990, pp. 159-165.
A.A. Babin, F.I. Fel'dshtein, & I.V. Yakovlev, "Generation of the Fifth Harmonic of Yttrium Orthoaluminate: Nd.sup.3+ Laser Radiation in KDP at Room Temperatures", Soviet Technical Physics Letters, Jun. 1990, pp. 417-418.
V.D. Volosov & E.V. Nilov, "Effect of the Spatial Structure of a Laser Beam on the Generation of the Second Harmonic in ADP and KDP Crystals", UDC, Nov. 1965, pp. 715-719.
A.G. Arutyunyan, G.G. Gurzadyan, & R.K. Ispiryan, "Generation of the Fifth Harmonic of Picosecond Yttrium Aluminate Laser Radiation", Soviet Journal Quantum Electron, Dec. 1989, pp. 1602-1603.
Shinichi Imai, Toshitaka Yamada, Yasutomo Fujimori & Ken Ishikawa, Third--Harmonic Generation of an Alexandrite Laser in .beta.-BaB.sub.2 O.sub.4 , Applied Physics Letters, May 1989, pp. 1206-1208.
Conference on Lasers and Electro-Optics, Optical Society of America, Apr. 1989, p. 390.

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